Please! Real time help - high rpms after snorkel install

[mulchiro]

I just finished installing a snorkel. Drove a few miles with no issues and then all of a sudden I shot up to 2000rpms while coming to a stop at an intersection. I almost couldn't get it to stop.

I was able to find a spot on the street to pull into and park safely. As soon as I put it in park it shot up to almost 5000rpms.

Can anyone help? Any idea why this would be happening?

 

[Douglas S]

Vaccum leak somewhere.

 

[93yotasr5]

X2.
Did the intake hose get clamped down all way after install ?

 

[mulchiro]

I checked the intake hose and made sure they were all clamped down tight. I rechecked all the hoses I removed from the air cleaner box.

When I started it again, it was back down to 2000rpms in park. I pressed on the gas and it went back up, and as I let off the gas, it stayed. I checked the throttle cable and it seems like it's getting stuck. I pulled on the cable below the throttle cable and it went down to normal idle. Sorry if I'm getting the names of these things wrong, but I'm still learning. Here is a picture of the cable I'm talking about. It's tough to see

 

[ToyotaDon]

I would recommend pulling the intake hose off the throttle body (upper left corner of your picture) and making sure nothing got sucked into the throttle plate.

The next thing would be to check the cable routing and make sure you didn't kink it somewhere. BTW, the cable you're pulling on is the transmission throttle valve cable, and wouldn't have anything to do with the sticking condition.

 

[mulchiro]

Ok I'll check those things next. I did loosen a bunch of crud from the air cleaner box. I wiped most of it out, but is it possible some of that gunk came loose and sucked into the throttle plate, as you said?

I would recommend pulling the intake hose off the throttle body (upper left corner of your picture) and making sure nothing got sucked into the throttle plate.

The next thing would be to check the cable routing and make sure you didn't kink it somewhere. BTW, the cable you're pulling on is the transmission throttle valve cable, and wouldn't have anything to do with the sticking condition.

 

[flintknapper]

Sounds like a 'restriction' to me (acting like a 'choke' on older vehicles). Check your cables then make certain nothing is blocking the snorkel or intake tube at any point. Empty and clean the 'tuna can' on your filter housing while you're at it.

 

[Gabriel 71]

You cracked the old intake tube look underneath in the bend

 

[mulchiro]

You cracked the old intake tube look underneath in the bend

You mean on the actual air cleaner box itself?

 

[Gabriel 71]

No I'm sorry the rubber tube connecting the air box and the intake in the bend the corrugated part it will crack when you pull up on the lid off the air box if you don't take it off the intake side first ask me how I know

 

[BILT4ME]

No, he means the hose between the air cleaner and the throttle body.

Also, did you ROUTE the cable correctly after putting it all back together? The PO on my truck installed the intake tube upside down and the cable was BELOW the hose. It's supposed to be above.

 

[mulchiro]

No, he means the hose between the air cleaner and the throttle body.

Also, did you ROUTE the cable correctly after putting it all back together? The PO on my truck installed the intake tube upside down and the cable was BELOW the hose. It's supposed to be above.

Ok I just checked and it is below! I'm going to switch it out and see if that helps...

 

[mulchiro]

No, he means the hose between the air cleaner and the throttle body.

Also, did you ROUTE the cable correctly after putting it all back together? The PO on my truck installed the intake tube upside down and the cable was BELOW the hose. It's supposed to be above.

Did that cause your throttle to stick?

 

[BILT4ME]

Did that cause your throttle to stick?

It was causing erratic behavior and the idle RPM was too high. It SHOULDN'T, but the cable was short and was binding. It should look like this:

 

[BILT4ME]

Like this:

 

[LandCruisinMy93]

Ummm... I'm not sure how the two are related. Usually with a massive vacuum leak or unmonitored air leak after the MAF you see the engine not want to climb over 2k rpm due to the computer throwing itself into limp mode. Your description sounds like the throttle plate isn't closing all the way on deceleration. Your throttle refusing to snap shut is likely due to a filthy throttle body, a damaged throttle cable that is sticking or you possibly somehow broke or dislodged a return spring at the throttle when messing around with the intake hose. That's my guesses. If shut it off and drab the throttle cable at it attachment and rock it fully open to disconnect the cables and then turn it back on and see how it operates. If it's acts the same remove the intake hose and inspect the throttle plate, open and close it a few times and see if it's slow to return or if something is lodged in there.

 

[mulchiro]

Ummm... I'm not sure how the two are related. Usually with a massive vacuum leak or unmonitored air leak after the MAF you see the engine not want to climb over 2k rpm due to the computer throwing itself into limp mode. Your description sounds like the throttle plate isn't closing all the way on deceleration. Your throttle refusing to snap shut is likely due to a filthy throttle body, a damaged throttle cable that is sticking or you possibly somehow broke or dislodged a return spring at the throttle when messing around with the intake hose. That's my guesses. If shut it off and drab the throttle cable at it attachment and rock it fully open to disconnect the cables and then turn it back on and see how it operates. If it's acts the same remove the intake hose and inspect the throttle plate, open and close it a few times and see if it's slow to return or if something is lodged in there.

This is the only thing that makes sense to me. I checked my throttle cable yesterday and it was definitely sticking. I lubed it up yesterday and it seems to be fine now...been driving it all day with no issues.

My guess is that my cable is old and it happened to stick the day after I installed my snorkel, or some gunk from the air cleaner box came loose and got stuck in the throttle plate and possibly kept it from closing entirely. Does this sound right?

 

[BILT4ME]

This is the only thing that makes sense to me. I checked my throttle cable yesterday and it was definitely sticking. I lubed it up yesterday and it seems to be fine now...been driving it all day with no issues.



My guess is that my cable is old and it happened to stick the day after I installed my snorkel, or some gunk from the air cleaner box came loose and got stuck in the throttle plate and possibly kept it from closing entirely. Does this sound right?

Yup! That's why mentioned the cable was for binding or routing.

Good luck!